" Is there a serious (as in bad) effect if you use the extended rear torsion tube as a jack point?" troy sloan
I'm assuming you mean the torsion tube that has the torsion bar (spring) inside and NOT the swing-arm tube. So, then it depends on where you're actually placing the jack point. If it's under the wheel hub, that's fine. If it's under the central portion of the torsion tube (under the central tunnel, really), that's fine, too. However, if it's under the torsion tube itself then you run a serious risk of bending the torsion tube from the weight. The tube isn't all that strong and coouldn't take that kind of weight.
"What about jacking in the front where the vertical subframe post is (where some have attached the axle brace)? Michael McKelvey"
Sure. Under the front corner bolts where the brace attaches to the pan (right where your feet hit the front bulkhead) is ok.
The rest of the points on the diagram above are fine. I often use a point just forward of the front transmission mount to jack up the entire rear of the car. In the front I position the jack plate under the front bulkhead right in the center to get both front wheels off the ground. Using either of these two points means that you'll need a floor jack that will push up with very minimal movement of the actuator arm, because once the jack is under the center of the car you won't get a lot of travel on the jacking arm.
gn
